CN101083825A - Method and apparatus for distributing dynamic spectrum in coexistent plurality of wireless networks - Google Patents

Method and apparatus for distributing dynamic spectrum in coexistent plurality of wireless networks Download PDF

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CN101083825A
CN101083825A CN 200610083526 CN200610083526A CN101083825A CN 101083825 A CN101083825 A CN 101083825A CN 200610083526 CN200610083526 CN 200610083526 CN 200610083526 A CN200610083526 A CN 200610083526A CN 101083825 A CN101083825 A CN 101083825A
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spectrum
ap
allocation
dynamic
resources
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CN101083825B (en
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白勇
陈岚
加山英俊
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株式会社Ntt都科摩
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10Dynamic resource partitioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14Spectrum sharing arrangements between different networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/0406Wireless resource allocation involving control information exchange between nodes
    • H04W72/0413Wireless resource allocation involving control information exchange between nodes in uplink direction of a wireless link, i.e. towards network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource
    • H04W72/0453Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource the resource being a frequency, carrier or frequency band
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/005Discovery of network devices, e.g. terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10Small scale networks; Flat hierarchical networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10Small scale networks; Flat hierarchical networks
    • H04W84/12WLAN [Wireless Local Area Networks]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices

Abstract

The present invention discloses dynamic spectrum allocation while the coexistence of a variety of wireless networks, it including following aspects. MS would detect self-services AP and its coexistence CAP, then send the bandwidth demand of this communication and CAP ID bandwidth request news to service AP; After receiving the bandwidth request message, service AP sent their own AP ID, the spectrum demand of this service AP that according to the bandwidth request message sent by one or more MS, and CAP ID request message to DSAM; According to the received spectrum demand, AP ID and CAP ID, DSAM implement dynamic spectrum allocation through a certain dynamic spectrum allocation algorithm, then sent the result of spectrum allocation to the AP service; AP services distribute the spectrum resources to the corresponding MS, according to the result of spectrum allocation. Through this method can achieve the dynamic sharing of spectrum resources among coexist various AP; improve the utilization efficiency of the spectrum.

Description

在共存的多种无线网络中进行动态频谱分配的方法及装置 A method of dynamic spectrum allocation in multiple coexisting wireless networks and devices

技术领域 FIELD

本发明涉及到无线网络中的频谱分配技术,特别涉及到一种在共存的多种无线网络中进行动态频谱分配的方法及动态频谱分配装置。 The present invention relates to spectrum allocation technology in a wireless network, particularly relates to a method of dynamic spectrum allocation in coexisting wireless networks and a plurality of dynamic spectrum allocation means.

背景技术 Background technique

未来的无线通信被期望可以满足用户在任何时间、任何地点的通信需求,并且这一愿景由于移动设备和无线网络的显著进步逐渐变为可能。 The future of wireless communications is expected to meet the user at any time, anywhere communications needs, and this vision due to significant advances in mobile devices and wireless networks gradually become possible. 为支持无所不在的通信需求,从覆盖区域角度划分的无线网络可包括小区域范围的本地短距离无线网络、微蜂窝网络及大区域范围的宏蜂窝网络。 To support ubiquitous communication needs, is divided from a coverage area of ​​the wireless network may include a small angle range of the local area short range wireless network, and a large area microcellular network-wide macro cellular network. 其中,小区域范围无线网络技术,例如无线局域网(WLAN,Wireless Local AreaNetwork),可以支持本地自组织的通信服务;而移动运营商建立的宏蜂窝网络系统能够对大区域内的用户提供通信服务。 Wherein, the small area range wireless network technology, such as wireless local area network (WLAN, Wireless Local AreaNetwork), can support communication services for a local self-organization; the macro cellular network system established by mobile operators provide communication services to users within a large area. 在实际的组网过程中,这些小区域范围及大区域范围的无线通信网络可能会被整合在一起,以实现在不同的位置给用户提供互相补充的通信服务,因此,未来无线通信网络环境将演变为大区域范围无线网络和小区域范围无线网络整合的异构网络环境,即多种类型的无线网络将在空间和时间上共存。 In the actual networking process, these small areas and large range of region-wide wireless communication network may be integrated together to achieve complement each other to provide communication services to users in different locations, therefore, the future wireless communication network environment Evolution of large area and small area wireless network range of coverage of the wireless network integration heterogeneous network environment, i.e., a plurality of types of wireless networks will coexist in space and time.

在这样的无线网络通信环境下,不同无线网络的业务量负荷会因为不均等的用户密度及业务活跃率在空间和时间上有所变化,因此,无线资源管理,尤其是频谱管理,应该能够实现对有限无线资源的有效利用。 In such a wireless network communication environment, traffic load different wireless networks because of unequal active user density and traffic rate vary in space and time, therefore, radio resource management, especially in spectrum management, should be able to achieve effective use of limited radio resources.

传统的固定频谱管理策略为特定的无线接入技术(RAT,Radio AccessTechnology)发放频谱执照使其独占频谱使用。 Conventional fixed spectrum management policy issued spectrum licenses it exclusive use of the spectrum for a particular radio access technology (RAT, Radio AccessTechnology). 然而,这种频谱管理方式不能及时地适应在空间和时间上动态变化的频谱资源需求,从而造成不均匀的频谱利用率以及人为的频谱缺乏。 However, this way spectrum management can not adapt in a timely manner on the spatial and temporal dynamics spectral resource needs, resulting in uneven spectrum utilization and lack of human spectrum. 为解决频谱缺乏的问题,如何提高频谱使用效率,采用更精细的频谱分配方法是目前亟待解决的问题。 To solve the problem of the lack of spectrum, how to improve the efficiency of spectrum use, the use of more sophisticated spectrum allocation method is a serious problem.

发明内容 SUMMARY

为了解决上述技术问题,本发明提供了一种在共存的多种无线网络中进行动态频谱分配的方法,可以在共存的多种无线网络中在时间和空间上实现频谱资源的动态分配。 To solve the above technical problem, the present invention provides a method of dynamic spectrum allocation in multiple coexisting wireless networks, dynamic allocation of spectrum resources may be implemented in time and space in a variety of wireless networks coexist.

本发明还提供了一种实现频谱资源动态分配的动态频谱分配装置,用于在共存的多种无线网络中实现时间和空间上的频谱资源动态分配。 The present invention further provides an apparatus for implementing dynamic spectrum allocation dynamic allocation of spectrum resources, spectrum resources for achieving dynamic allocation of time and space in a variety of wireless networks coexist.

本发明所述在共存的多种无线网络中进行动态频谱分配的方法,包括:A、移动终端(MS)检测自身的服务接入点(AP,Access Point)及该服务AP的共存接入点(cAP,coexisting AP),获得所述cAP的标识cAP ID,再发送带宽请求消息到所述服务AP,并在该带宽请求消息中携带本次通信的带宽需求量以及所述cAP ID;B、在接收到所述带宽请求消息后,所述服务AP发送一频谱请求消息到动态频谱分配模块(DSAM,Dynamic Spectrum Allocation Module),并在该频谱请求消息中携带有自身AP ID,及根据一个或多个MS的所述带宽请求消息得到的该服务AP的频谱需求量和其cAP ID;C、所述DSAM根据所接收的频谱需求量,AP ID及cAP ID,通过一定的动态频谱分配算法进行动态频谱分配,并将频谱分配结果发送到所述服务AP;D、所述服务AP根据来自所述DSAM的频谱分配结果,分配相应的频谱资源给所述MS。 The method of the present invention for dynamic spectrum allocation in multiple coexisting wireless networks, comprising: a coexistence access point A, the mobile terminal (MS) detects its own serving Access Point (AP, Access Point) and the serving AP (cAP, coexisting AP), obtaining the identification cAP cAP ID, and then transmits a bandwidth request message to the serving AP, the bandwidth demand and carry this communication the cAP ID and the bandwidth request message; B, upon receiving the bandwidth request message, the serving AP sending the spectrum request message to a dynamic spectrum allocation module (DSAM, dynamic spectrum allocation module), and carried in the spectrum request message has its own AP ID, and in accordance with one or spectrum demand of the serving AP to the bandwidth request message to obtain a plurality of MS and its cAP ID; C, the DSAM the spectrum of the received demand, AP ID and cAP ID, by a certain dynamic spectrum allocation algorithm dynamic spectrum allocation, and spectrum allocation result to the serving AP; D, the serving AP according to the spectrum allocation result from the DSAM allocates the spectrum resources to the corresponding MS.

上述步骤B所述AP发送频谱请求消息包括:所述AP在接收到一个带宽请求消息后立即发送与所接收带宽请求消息对应的一个频谱请求消息到所述DSAM;或者所述AP在接收到多个带宽请求消息后,将多个带宽请求合并在一起,发送一个频谱请求到所述DSAM。 Step B above the AP sending the spectrum request message comprises: receiving the AP send one bandwidth request message received immediately a spectral bandwidth request message to the corresponding request message The DSAM; or received by the AP in the multi th bandwidth request message, the combined plurality of bandwidth requests, transmits a spectrum request to the DSAM. 其中,所述AP根据预先设定的频谱需求量门限或预先设定的频谱请求时间间隔或其组合确定发送频谱请求消息的时机。 Wherein said AP request time set in advance based on the spectrum of the spectrum demand thresholds or predetermined time intervals or a combination thereof determines the transmission spectrum request message.

上述步骤C所述动态频谱分配包括:C1、从所接收的频谱请求消息中提取频谱需求量以及AP ID和cAP ID;C2、根据所述AP ID查找自身存储的与该AP ID对应的频谱分配表(SAT,Spectrum Allocation Table),如果存在,则执行步骤C3,否则,建立与该AP ID对应的SAT,并设为所述服务AP实际分配的频谱资源为0,然后执行步骤C3;C3、在所述SAT中查找与cAP ID对应的频谱资源分配记录,如果存在,则执行步骤C4,否则,在所述SAT中添加与所述cAP ID对应的记录,并设为所述cAP实际分配的频谱资源为0,然后执行步骤C4;C4、从所述频谱资源分配记录中获得该MS服务AP实际所分配的频谱资源以及其服务AP的cAP实际所分配的频谱资源,并根据频谱资源请求消息中携带的所述服务AP的频谱需求量及所述cAP的频谱需求量;C5、判断所述服务AP的频谱需求量及所述cAP的频谱需求量之和是否大于可全 Step C above the dynamic spectrum allocation includes: a spectrum demand message and extracts the AP ID and cAP ID C1, the received request from the spectrum; C2, find the spectrum allocation corresponding to the AP ID stored in itself according to the AP ID table (SAT, spectrum allocation table), if present, step C3, otherwise in association with the AP ID SAT, and set the serving AP spectrum resources actually allocated to 0, then step a C3; C3, Find the cAP ID in the SAT spectrum allocation record corresponding to, if present, step C4, otherwise, adding the record corresponding to the cAP ID in the SAT, and actually allocated to the cAP spectrum resources is 0, then the step C4; C4, MS serving AP obtains the spectrum actually allocated resources and spectrum resources cAP of its serving AP actually allocated from the spectrum allocation record, and spectrum resource request message carried in the spectrum demand of the serving AP and the spectrum demand of the cAP; C5, determining whether the serving AP and the spectrum demand of the cAP is greater than the sum of the spectrum demand may be whole 共享的频谱量,如果是,则进行拥塞情况下的频谱资源动态分配,否则,按照所述服务AP的实际需要为其分配相应的频谱资源;C6、根据频谱分配结果更新所述SAT中对应的频谱资源分配记录。 The amount of shared spectrum, if so, spectrum resources in the case of dynamic allocation of congestion, or, according to the actual needs of the serving AP is assigned a respective spectrum resources; C6, update the SAT according to the spectrum allocation result corresponding spectrum allocation record.

其中,步骤C5所述拥塞情况下的频谱资源动态分配为基于优先级的频谱资源分配;具体包括:优先满足具有较高的优先级的频谱请求。 Wherein the step of C5 congestion spectrum resources in dynamic allocation of the priority-based spectrum allocation; comprises: giving priority to a higher priority with spectrum request. 或者为基于保留的频谱资源分配;包括:设置共存的一个RAT中的AP的保留频谱资源,在动态频谱分配过程中,已设置保留频谱资源的AP实际获得的频谱资源为所述保留频谱资源和其频谱需求量之间的最小值,其他没有设置保留频谱资源的RAT中的AP可以获得的频谱资源为共享的频谱资源总量与保留频谱资源的AP实际获得的频谱资源之差。 Or a reservation-based spectrum allocation; comprising: spectral resource reservation setting AP of one RAT coexist in the process of dynamic spectrum allocation, a spectrum resource reservation set AP spectrum resources to the actually obtained spectrum resource reservation and its minimum value between the spectrum demand, provided no other resources reserved spectrum of RAT AP spectrum resources available for the difference between the total spectrum resources shared spectrum resources and spectrum resources reservation AP actually obtained. 又或者为按照预先设定的各个共存AP的频谱资源分配概率进行频谱资源动态分配。 Or the spectrum resources according to spectrum allocation probabilities preset each coexisting AP dynamic allocation.

其中,所述预先为共存的RAT所设定的保留频谱资源或频谱资源分配概率是根据频谱过载概率和/或从共存的AP获得的总收益所设计的准则来确定的。 Wherein the spectrum resources reserved in advance for the spectrum allocation probabilities of the coexisting RAT is set or determined based on the spectrum the overload probability criterion and / or the total revenue obtained from the coexisting AP designed.

所述方法进一步包括:预先为共存的AP分配一定的频谱资源量;在步骤C5之前进一步包括:如果一个AP的频谱需求量小于或者等于预先分配的频谱量,则该AP直接为请求频谱资源的MS分配相应的频谱资源,然后执行步骤C6,否则,执行步骤C5。 The method further comprising: pre-allocate a certain amount of spectrum resources coexisting AP; further comprising prior to the step C5: if the spectrum demand of an AP is less than or equal amount of spectrum allocated in advance, directly to the AP requesting the spectrum resource MS spectrum corresponding resource allocation, then the step C6, otherwise to step C5.

当由于MS的移动而导致其cAP改变时,所述方法进一步包括:所述MS进行频谱资源的重新分配。 When the MS is caused due to the movement thereof cAP changes, the method further comprising: the MS spectrum reallocation of resources. 其中,所述频谱资源的重新分配包括:判断该MS服务AP的频谱需求量及其cAP的频谱需求量之和是否大于可全部共享的频谱量,如果是,则进行拥塞情况下的频谱资源动态分配,否则,按照所述服务AP的实际需要为其分配相应的频谱资源;根据频谱分配结果更新所述SAT中对应的频谱资源分配记录。 Wherein reallocating the spectrum resources comprises: determining a spectrum demand of the cAP of its spectrum demand of the serving AP and the MS is greater than the amount of spectrum may all be shared, if yes, spectrum resources under dynamic congestion distribution, otherwise, according to the actual needs of the serving AP is assigned a respective spectrum resources; update spectrum allocation record in the SAT according to the spectrum corresponding to the allocation result.

根据本发明的另一方面,所述动态频谱分配装置,主要包括:频谱资源请求处理模块,用于接收来自各种RAT中AP的频谱资源请求消息,并从中提取频谱资源请求的相关参数;SAT存储模块,用于存储对应共存的RAT中各个AP的频谱资源分配记录;动态频谱分配模块,连接到所述频谱资源请求处理模块及所述SAT存储模块,用于根据来自频谱资源请求处理模块的频谱资源请求的相关参数,通过查找所述SAT存储模块中存储的SAT记录,根据一定的动态频谱分配算法进行动态频谱分配;频谱分配结果输出模块,连接到所述动态频谱分配模块,用于将来自所述动态频谱分配模块的动态频谱分配结果输出到发送频谱请求消息的AP。 According to another aspect of the present invention, the dynamic spectrum allocation apparatus, including: a spectrum request processing module resources, spectrum resources for receiving from the AP in the RAT various request message, and extract the relevant parameters of the spectrum resource request; the SAT a storage module, each AP in the RAT spectrum resources for storing the allocation record corresponding to coexist; dynamic spectrum allocation module, connected to the spectrum resource request processing module and the SAT storing module according to a request from the spectrum resource processing module spectrum resource request parameters, performs recording by looking SAT SAT storing module according to a certain stored dynamic spectrum allocation algorithm for dynamic spectrum allocation; spectrum allocation result output module, connected to the dynamic spectrum allocation module, for output dynamic spectrum allocation result from the dynamic spectrum allocation module to the AP sending the spectrum request message.

其中,所述动态频谱分配装置通过有线或者无线的方式与所述服务AP及共存AP通信。 Wherein the dynamic spectrum allocation apparatus through a wired or wireless manner with the serving AP and a coexisting AP communication.

由此可以看出,通过本发明所述的在共存的多种无线网络中进行动态频谱分配的方法及装置通过DSAM所维护的SAT以及一定的频谱资源分配算法可以在共存的RAT中多个AP之间实现动态的频谱资源共享,因此,可以适应各个无线网络的业务量在空间和时间上的动态变化,使共存的无线网络的频谱利用率得到显著提高。 It can be seen that by the method and apparatus of dynamic spectrum allocation in multiple coexisting wireless networks in the present invention is maintained by a DSAM SAT and a certain spectrum allocation algorithm may be a plurality of AP in the RAT coexist achieved between the dynamic spectrum sharing resources, and therefore, can adapt to the dynamic changes in the traffic of each wireless network in space and time, so that spectrum utilization coexisting wireless networks is significantly improved.

另外,本发明所述的在共存的多种无线网络中进行动态频谱分配的方法及装置通过拥赛时的频谱分配算法还可以在多个共存的AP的频谱资源需求发生拥塞的情况下,实现频谱资源的动态分配以降低频谱过载概率或使得从共存的RAT获得的总收益最大化。 Case of method and apparatus Further, dynamic spectrum allocation in multiple coexisting wireless networks in the present invention by a spectrum allocation algorithm can also match the owner coexist in a plurality of spectral resource needs of the congested AP to achieve dynamic allocation of spectrum resources in order to reduce the probability of an overload or spectral bringing the total to maximize gains from coexisting RAT.

附图说明 BRIEF DESCRIPTION

图1为可以支持多种不同的通信服务的两种无线网络共存的网络环境示意图;图2为显示了由多个RAT共享的全部频谱资源N的示意图;图3为本发明优选实施例所述的动态频谱分配方法的实现流程图;图4为在图3所示的动态频谱分配方法中,DSAM根据SAT以及一定的动态频谱分配算法进行所述的动态频谱分配的方法流程图;图5显示了一个RAT频谱需求量r随时间的变化情况;图6显示了一个RAT频谱需求量的概率分布;图7为本发明优选实施例所述的DSAM结构示意图。 Figure 1 is a block diagram of one network may support a variety of different communication services of two wireless networks coexist; FIG. 2 is a schematic diagram showing the entire spectrum resources shared N by a plurality of RAT; FIG. 3 of the preferred embodiment of the present invention. the flow chart for implementing the method of dynamic spectrum allocation; FIG. 4 is a method of dynamic spectrum allocation in the method shown in FIG. 3, DSAM dynamic spectrum allocation in accordance with the SAT and some dynamic spectrum allocation algorithm flow chart; Figure 5 shows the a spectrum demand r of RAT with changes over time; Figure 6 shows a probability distribution of the spectrum demand RAT; DSAM FIG. 7 is a schematic configuration example of the preferred embodiment of the present invention.

具体实施方式 Detailed ways

为使发明的目的、技术方案及优点更加清楚明白,以下参照附图并举实施例,对本发明作进一步详细说明。 For purposes of the invention, the technical solution and merits thereof more apparent, with reference to the accompanying drawings and the following embodiments, the present invention is described in further detail.

本发明所述的动态频谱分配方法及装置适合应用在多种无线网络共存的网络环境中。 Dynamic spectrum allocation method and apparatus according to the present invention is suitable for use in a variety of wireless networks coexist in a network environment. 图1显示了可以支持多种不同的通信服务的两种无线网络共存的网络环境。 Figure 1 shows a can support a variety of different communication services two wireless networks coexist in a network environment. 需要说明的是,本发明还可扩展到超过两个的无线网络共存的通信场景中,而不会超出本发明的意欲保护的范围。 Incidentally, the present invention may also be extended to more than two wireless communication networks coexist scenarios without departing from the scope of the present invention to be protected.

在图1所示的网络环境中,两种无线网络所使用的RAT分别为RAT#1和RAT#2,这两种RAT在相同的地理服务区域中共存,换句话说,这两种RAT的服务覆盖范围在空间上相互重叠。 In the network environment shown in Figure 1, the two wireless networks are used for RAT 1 and RAT # 2, two coexisting RAT RAT # in the same geographical service area, in other words, both the RAT service coverage overlap each other in space. 例如,如图1所示,在RAT#1的AP RAT#1-AP1的无线覆盖范围中,还存在RAT#2的AP,如RAT#2-AP1,RAT#2-AP2及RAT#2-AP3的无线覆盖范围。 For example, as shown in FIG RAT # wireless coverage AP RAT # 1-AP1 1, there is also 1 RAT # AP 2, as RAT # 2-AP1, RAT # 2-AP2 and RAT # 2- AP3 wireless coverage. 在实际的无线通信系统中,所谓的AP可以是蜂窝网络中的一个基站,也可以是WLAN中的一个AP。 In an actual wireless communication system, so called AP may be a base station in a cellular network, it may be one of the WLAN AP. 图1中所示的RAT#1-MS1,RAT#1-MS2,RAT#1-MS3以及RAT#1-MS4表示由RAT#1提供服务的MS,在图1中没有显示由RAT#2提供服务的MS。 FIG RAT # 1-MS1 shown in FIG. 1, RAT # 1-MS2, RAT # 1-MS3 and RAT # 1-MS4 represented by the MS 1 serving RAT #, not shown by RAT # 2 in FIG. 1 MS services.

相对于RAT#1服务的一个MS,例如对RAT#1-MS1而言,RAT#1-MS1处于RAT#1-AP1的无线覆盖范围之内,并且还由RAT#1-AP1提供服务,则RAT#1-AP1为RAT#1-MS1的服务AP。 RAT # 1 with respect to a MS and services, for example, in terms of RAT # 1-MS1, RAT # 1-MS1 is within the wireless coverage area of ​​RAT # 1-AP1's, and also served by RAT # 1-AP1, the RAT # 1-AP1 as RAT # 1-MS1 service AP. 除此之外,RAT#1-MS1还处于RAT#2-AP1的无线覆盖范围之内,因此,RAT#2-AP1为与所述RAT#1-MS1服务AP的共存cAP。 In addition, RAT # 1-MS1 is further within the wireless coverage RAT # 2-AP1 is the therefore, RAT # 2-AP1 is the serving RAT # 1-MS1 AP coexistence cAP. 如图1所示,此时RAT#1-MS1的服务AP为RAT#1-AP1,其服务AP的cAP为RAT#2-AP1。 1, RAT # 1-MS1 case serving AP for the 1-AP1, cAP of its serving AP of RAT # RAT # 2-AP1. 而当RAT#1-MS1移动到RAT#2-AP2的无线覆盖范围内时,它的服务AP保持RAT#1-AP1不变,而其服务AP的cAP将变化为RAT#2-AP2。 When the radio coverage of RAT # 2-AP2 of RAT # 1-MS1 moves to its serving AP of RAT # 1-AP1 remains unchanged, while the cAP of its serving AP changes to RAT # 2-AP2.

在图1所示的网络环境中,RAT#1和RAT#2两个RAT的频谱需求会因为自身业务量负荷的变化而在空间和时间中动态地改变。 In the network environment shown in FIG. 1, RAT # 1 and RAT # 2 spectrum demand of RAT may vary with two traffic load itself dynamically changes in space and time. 为了提高频谱使用效率,在本发明所述的动态频谱分配方法中,两个RAT可以对全部频谱资源进行动态共享,以适应动态变化的频谱需求。 In order to improve spectral efficiency used in the method of dynamic spectrum allocation according to the present invention, two of the RAT may be all dynamic shared spectrum resources, to accommodate dynamically changing spectrum requirements.

在这里,假设待分配频谱资源可划分和可分配的最小单元为f,由多个RAT共享的全部频谱资源为Nf。 Here, it is assumed to be the minimum unit of resources allocated spectrum may be divided and allocated is f, a plurality of RAT shared spectrum resources for all Nf. 为了描述方便,在下面的描述中省略了频谱最小单元符号f,仅使用N表示全部的共享频谱资源。 For convenience of description, the following description will be omitted in the spectrum of the minimum unit symbols F, using only the N represent the full spectrum of shared resources. 图2显示了由多个RAT共享的全部频谱资源N。 FIG. 2 shows all the spectrum resources shared by a plurality of RAT N.

为了实现频谱资源N在多个RAT之间的共享,本发明的优选实施例给出了一种在多个共存的RAT之间对所述频谱资源进行动态分配的方法,该动态频谱分配方法的实现过程如图3所示,主要包括以下步骤:A、在MS请求本次通信所需的频谱资源之前,该MS检测自身的服务AP及该服务AP的cAP,并获得自身服务AP的标识AP ID及所述cAP的标识cAP ID。 To achieve N spectrum resources shared among the plurality of RAT, preferred embodiments of the present invention gives a method for dynamic allocation between coexisting RAT A plurality of the spectrum resources, the method of dynamic spectrum allocation implementation shown in Figure 3, includes the following steps: a, before requesting MS spectrum resources required for this communication, the MS detects its serving AP and the cAP of the serving AP, and obtains the AP itself identifies the serving AP cAP ID and the cAP ID identification.

为了实现步骤A,需要对现有MS进行改进,使其能够对其临近的与自身服务AP共存的其他AP进行检测。 In order to achieve Step A, needs to be improved prior to MS, it is possible to detect its own serving AP and other coexisting neighboring AP. 本领域的技术人员可以理解,这种对MS功能的改进是非常容易实现的,而且无需在MS上增加复杂的频谱感知技术。 Those skilled in the art will be appreciated that such functional improvements MS is very easy to implement, but without increasing the complexity of spectrum sensing technology in the MS. 具体来讲,对于双模和多模的MS,它可以直接获得另一个RAT中共存AP的情况;而对于单模的MS,它可以在共存的RAT中通过增加一个公共信道来通知移动终端的共存AP的情况或发送信标使移动终端可以检测到共存的AP。 Specifically, dual-mode and multimode for the MS, it can be directly obtained in the case of coexisting AP in another RAT; and the MS for a single-mode, it may notify the mobile terminal by adding a common channel in the coexistence of a RAT coexistence AP transmits a beacon or a case that the mobile terminal can detect the AP coexist.

B、所述MS发送带宽请求消息到自身的服务AP,并在该带宽请求消息中携带本次通信的带宽需求量,以及在步骤A获得的cAP ID。 B, the MS transmits a bandwidth request message to the AP's own service, and carrying a bandwidth demand in this communication the bandwidth request message, and the cAP ID obtained in Step A.

C、所述服务AP在接收到所述带宽请求消息后,根据其中携带的本次通信所需的带宽需求量得到所述服务AP的频谱需求量,并发送一频谱请求消息到负责动态频谱分配的DSAM,其中携带自身的AP ID以及所述频谱需求量以及cAP ID。 C, the serving AP receiving said bandwidth request message, where according to the bandwidth demand required to carry this communication to obtain the spectrum demand of the serving AP, and transmits a spectrum request message to the dynamic spectrum allocation responsible the DSAM, carrying its own AP ID and the spectrum demand and a cAP ID.

在本步骤中,所述AP可以采用多种方式发送所述频谱请求消息,例如所述AP可以在接收到一个带宽请求消息后立即发送与该带宽请求消息对应的一个频谱请求消息到所述DSAM;也可以在接收到多个带宽请求消息后,将多个带宽请求合并在一起,发送一个频谱请求到所述DSAM,其中,该频谱请求消息中所携带的频谱需求量应当为所述多个带宽请求所需频谱需求量的总和。 In this step, the AP may use a variety of ways to send the spectrum request message, for example, the receiving AP may transmit a bandwidth of a spectrum request message corresponding to the bandwidth request message immediately after the request message to the DSAM ; may after receiving a plurality of bandwidth request message, the combined plurality of bandwidth requests, sends a request to the the DSAM the spectrum, wherein the spectrum demand carried in the spectrum request message should said plurality the sum of the desired spectral bandwidth request demand. 对应后一种实现方法,发送频谱请求消息的时机可以根据预先设定的频谱需求量门限确定,也可以根据预先设定的频谱请求时间间隔来确定,或者同时考虑频谱需求量门限以及频谱请求的时间间隔。 After the corresponding one implementation method, the timing of sending the spectrum request message may be determined based on a preset threshold spectrum demand of the door, the time interval to determine the spectrum request may be set in advance, or taking into account the spectrum demand thresholds and spectrum request time interval. 若MS发送到AP的带宽请求消息中进一步携带MS进行通信的业务类型,则AP可以根据MS通信的业务类型,例如是实时业务还是非实时业务,来设定不同的频谱需求量门限和频谱请求时间间隔。 Message further carries the type of communication service the MS if the MS sends a request to the bandwidth of the AP, the AP may MS according to the service type of communication, such as real-time traffic or non-real time traffic, to set different spectrum demand thresholds and spectrum request time interval.

本步骤所述的DSAM是一个逻辑实体,它可以是一个独立的网络设备,也可以作为一个逻辑模块被整合在已有的网络设备中,例如,可以被整合在某个无线网络RAT的AP中。 In this step, the DSAM is a logical entity, it can be a separate network device, or as a logic module is integrated into an existing network device, for example, may be integrated in a wireless network AP of RAT . 另外,从某个RAT的AP到所述DSAM的连接可以是有线的,也可以是无线的。 Further, from an AP of RAT to the DSAM the connection may be wired or may be wireless. 若所述DSAM被整合在如图1所示的RAT#1-AP1中,则对应RAT#2中某个AP的频谱请求消息,可以由该RAT#2的AP直接发送到所述DSAM,或者由该RAT#2的AP首先发送到RAT#1-AP1,然后再由RAT#1-AP1转发到所述DSAM。 If the DSAM is integrated into RAT # 1-AP1 as shown in FIG. 1, RAT # 2 corresponding to the spectrum of an AP request message may be sent by the RAT # AP 2 to the DSAM directly, or transmitted by the first RAT # AP 2 to RAT # 1-AP1, and then forwarded by RAT # 1-AP1 to the DSAM.

D、所述DSAM根据所接收的频谱需求量,AP ID以及cAP ID,通过一定的动态频谱分配算法进行动态频谱分配,并将频谱分配结果发送到发送所述频谱请求消息的AP。 D, the DSAM the spectrum of the received demand, AP ID and cAP ID, dynamic spectrum allocation by a certain dynamic spectrum allocation algorithm, and the spectrum allocation result to the AP transmits the spectrum request message.

E、所述AP根据来自所述DSAM的频谱分配结果,分配相应的频谱资源给所述MS。 E, AP according to the spectrum allocation result from the DSAM allocates the spectrum resources to the corresponding MS.

F、当MS移动到另一个共存AP区域从而导致其cAP改变时,该MS需要完成相关的频谱资源的重新分配。 F., When the MS moves to another AP coexistence region causing it cAP changes, the MS complete redistribution of spectrum resources associated.

具体来讲,该步骤所述的频谱资源重新分配可通过执行下文图4所示的步骤D6~D9来实现。 Specifically, the spectrum resource re-allocation step D6 ~ D9 may be realized by executing the steps shown in FIG. 4 below.

为了实现上述步骤D所述的动态频谱分配,所述DSAM需要为请求频谱资源的每个RAT的AP建立了SAT,用于记录该AP与其共存AP之间实际的频谱分配情况。 In order to achieve dynamic spectrum allocation in the above step D, the DSAM the SAT for the AP needs to establish each RAT spectrum resource request, the actual spectrum allocation between the AP and its coexisting AP for recording. 表1为图1所示的RAT#1-AP1的SAT示例。 Table 1 SAT example shown in Figure 1 of RAT # 1-AP1.

表1所示的RAT#1-AP1的SAT中包含一条或多条的频谱资源分配记录,其中,每一条资源分配记录对应一个与该表所对应AP的共存AP,记录了在该表所对应AP与其共存AP共同的覆盖范围内,为该AP实际分配的频谱资源n1及为其共存AP实际分配的频谱资源n2。 Table spectrum allocation record 1-AP1 illustrated in SAT RAT # 1 contains one or more, wherein each resource allocation record corresponding to a coexisting AP and the AP corresponding to the table, the corresponding record in the table AP within the common coverage coexisting AP, spectrum resources for the AP n1 actually allocated for its coexisting AP and the spectrum actually allocated resources n2. 通过表1所示频谱资源分配记录,DSAM可以得到RAT#1-AP1与其共存AP,例如RAT#2-AP1、RAT#2-AP3和RAT#2-AP3之间实际的频谱分配情况。 By spectrum allocation records illustrated in Table 1, DSAM can obtain RAT # 1-AP1 coexisting AP, for example RAT # 2-AP1, RAT # 2-AP3 and the actual spectrum allocation between 2-AP3 RAT #.

在本步骤中,DSAM实际上根据所述SAT以及一定的动态频谱分配算法进行所述动态频谱分配的,其具体方法如图4所示,主要包括以下步骤:D1、从所接收的频谱请求消息中提取频谱需求量以及AP ID和cAP ID;D2、根据所述AP ID查找自身存储的,与该AP ID对应的SAT,如果不存在与该AP ID对应的SAT,则建立与该AP ID对应的SAT,并设为所述服务AP实际分配的频谱资源n1为0;D3、在得到的所述SAT中查找与cAP ID对应的频谱资源分配记录,如果没有与所述cAP ID对应的记录,则在所述SAT中添加与所述cAP ID对应的记录,此时,设为所述共存AP实际分配的频谱资源n2为0;D4、从所述频谱资源分配记录中获得为该MS服务AP实际分配的频谱资源n1以及为其服务AP的共存AP实际分配的频谱资源n2;D5、根据频谱资源请求消息中携带的所述服务AP的频谱需求量r1及所述共存AP的频谱需求量r2;D6、 In this step, The DSAM is actually performed according to the SAT, and in certain dynamic spectrum allocation algorithm of the dynamic spectrum allocation, the specific method shown in Figure 4, includes the following steps: D1, a request message received from the spectrum extracting the spectrum demand and AP ID and cAP ID; D2, to find its own ID stored in said AP, the AP ID and the corresponding SAT, if there is no ID corresponding to the AP SAT, is established with the AP corresponding to the ID the SAT, and set the spectrum resources of the serving AP is n1 actually allocated 0; D3, find the spectrum allocation record corresponding to the cAP ID in the SAT obtained, if no record corresponding to the cAP ID, adding the record corresponding to the cAP ID in the SAT, the case, the spectrum resources to the coexistence AP n2 actually allocated is 0; D4, is obtained for the MS from the serving AP the spectrum allocation record n1 actually allocated spectrum resources and spectrum resources for its coexisting AP serving AP actually allocated n2; D5, spectrum resource request message according to the spectrum demand carried in the spectrum demand of the serving AP and the coexisting AP r1 and r2 ; D6, 断是否会出现频谱拥塞,即判断所述服务AP的频谱需求量r1及所述共存AP的频谱需求量r2之和是否大于可全部共享的频谱量N,如果是,则执行步骤D7,否则,执行步骤D8;D7、进行拥塞情况下的频谱资源动态分配;D8、按照所述服务AP的实际需要为所述服务AP分配相应的频谱资源;D9、根据频谱分配结果更新所述SAT中对应的频谱资源分配记录。 Whether there will be spectrum congestion off, i.e., determines the service spectrum demand r1 of the AP and the spectrum demand of an AP of the coexistence r2 is greater than the sum of the amount of spectrum sharing may all be N, and if yes, executes step D7, otherwise, step D8; D7, spectrum resources under congestion dynamic allocation; D8, according to the actual needs of the serving AP to the serving AP corresponding allocation of spectrum resources; D9, update the SAT according to the spectrum allocation result corresponding spectrum allocation record.

本实施例给出了3种拥塞情况下的资源分配方法以实现上述步骤D7。 This embodiment provides a resource allocation method in three kinds of congestion to realize the above step D7.

方法1:基于优先级的频谱资源分配。 Method 1: priority-based allocation of spectrum resources.

在基于优先级的频谱资源分配策略下,具有更高的优先级的频谱请求将获得所需的频谱。 In priority-based spectrum allocation strategies, priorities will have a higher frequency spectrum request to obtain the desired spectrum.

其中,优先级的可以简单地根据发起频谱请求的RAT来确定。 Wherein, the priority may be determined simply according to the RAT initiating the spectrum request. 例如,可以设定由RAT#1发起的频谱请求比由RAT#2发起的频谱请求具有更高的优先级,在这种情况下,RAT#1的频谱需求首先被满足,具体而言,采用如下公式进行频谱分配,n1=min(r1,N),n2=N-n1。 For example, RAT # 1 may be set by the spectrum request initiated by a higher priority than the spectrum request initiated by RAT # 2, in this case, RAT # 1 is first spectrum demand is satisfied, specifically, the use spectrum allocation following formula, n1 = min (r1, N), n2 = N-n1.

另外,还可以根据请求带宽的业务的重要程度来确定所述优先级。 Further, the priority may be determined according to the degree of importance of the service requested bandwidth. 其中,所述业务的重要程度可根据业务类型或者运营商从中获取收益等来划分等级。 Among them, the importance of the service can monetize like a hierarchy based on business type or operator. 例如,话音业务由于其实时性的要求,应当比数据业务设置为更高的优先级,实时业务应当比非实时业务具有更高的优先级,具有高收益的业务应当比低收益的业务具有更高的优先级等等。 For example, voice traffic because of the real-time requirements, should be a higher priority than traffic data is provided real-time traffic should have a higher priority than the service with high-yield non-real time traffic should have more traffic than the low-yielding high priority, and so on. 在实际的频谱分配过程中,如果根据业务的类型来确定频谱请求的优先级,则MS需要在步骤A的带宽请求消息中进一步增加通信的业务类型,AP需要在步骤B的频谱请求消息中将所述业务类型发送给DSAM以进行所述动态频谱分配。 In the process of actual spectrum allocation, if the priority of the spectrum request is determined according to the type of service, the MS needs to further increase the service type in the communication bandwidth request message in step A, step B, the AP need spectrum request message will the service type is sent to the DSAM for dynamic spectrum allocation.

为满足更高的优先级业务的带宽需求,对于当前正在被服务的业务而言可以设计为可中断的业务和不可中断的业务。 In order to meet the bandwidth needs of higher priority services, for business services currently being designed to be interruptible and non-interruptible service business. 如果当前被服务的业务是可中断的业务,则在出现频谱资源拥塞的情况下,该业务可被中止,其释放的频谱资源就可以被分配给其它具有更高优先级的业务。 If the business is currently being serviced interruptible service, the case of spectrum resources in the event of congestion, the service may be suspended, the release of spectrum resources can be allocated to other business has a higher priority. 而如果当前被服务的业务是不可中断的业务,则新的频谱请求需要等待当前被服务的业务结束后,才能获得相应的频谱资源。 And if the current service is not interrupted business is business, we need to wait for new spectrum request is currently being serviced after the end of the business, in order to obtain the corresponding spectrum resources.

从上述基于优先级的频谱资源分配方法可以看出,一种支持更高优先级的RAT可能独占全部可用的频谱资源,以至于导致支持较低优先级的RAT的服务质量(QoS,Quality of Service)可能很低。 The priority level of the spectrum can be seen that the resource allocation method based on a spectrum resources to support a higher priority RAT may monopolize all available from that leading to support quality of service of the lower priority RAT (QoS, Quality of Service ) may be low.

方法2:基于保留的频谱资源分配。 Method 2: allocating spectrum based on the reserved resources.

在基于保留的频谱资源分配策略中,为共存的多种RAT中的一种或几种RAT分别保留一定的频谱资源,称为保留频谱资源Nrev。 In the spectrum allocation policy based on reserved, for a variety of coexisting RAT in one or more RAT respectively retain a certain spectrum resources as a reservation of spectrum resources Nrev. 该保留的频谱资源是当多个RAT之间存在频谱资源拥塞时可以保证分配给所述一个或几个RAT的频谱量。 The reserved spectrum resources when there are a plurality of spectrum resources among congested RAT may ensure that one or more of the amount of spectrum allocated to the RAT. 在实际的频谱资源分配过程中,若出现频谱资源拥塞,进行保留的频谱资源分配的具体方法为:设置RAT的保留频谱资源Nrev,该RAT实际获得的资源为所述保留频谱资源Nrev和其频谱需求量之间的最小值,其他没有设置保留频谱资源的RAT可以获得的频谱资源为共享的频谱资源总量与所有保留频谱资源的差。 The specific method in the actual spectrum allocation process, if the spectrum resource congestion occurs, the spectrum reserved for resource allocation to: setting reserved spectrum of RAT Nrev resources, the resources of the actually obtained RAT reserved for the spectrum and its spectrum resources Nrev minimum between demand, the other did not set retention spectrum resources RAT spectrum resources available for the total amount of spectrum resources shared by all the difference between reserved spectrum resources. 例如,在图1所示的网络环境中,若为RAT#2的保留频谱为Nrev2时,RAT#2和RAT#1两个RAT之间的频谱分配为n2=min(r2,Nrev2),n1=N-n2。 For example, in a network environment shown in Figure 1, if the reserved spectrum for the RAT # 2 is Nrev2, the spectrum allocation between RAT # 2 and RAT # 1 is two RAT n2 = min (r2, Nrev2), n1 = N-n2. 有上述频谱资源分配方法可以看出,当一个RAT的频谱需求量不超过为该RAT所保留的频谱时,所保留的频谱也可以被另外的RAT所共享。 Spectrum allocation above-described method can be seen that when the spectrum demand of one RAT that is not more than the reserved spectrum RAT, the reserved spectrum can be shared by another RAT.

方法3:基于概率的频谱资源分配。 Method 3: allocating spectrum resources based on probability.

在这种策略下,当存在频谱拥塞时,频谱资源将按照预先设定的各个共存的RAT频谱资源分配概率进行频谱资源分配。 In this strategy, when the spectrum congestion exists, spectrum resources will be allocated according to spectrum resources RAT spectrum allocation probabilities preset each coexisting. 例如,在图1所示的网络环境中,可以预先设定RAT#1和RAT#2在存在频谱拥塞时的频谱分配概率分别为p1和p2,此时,DSAM则可以根据所述频谱分配概率进行频谱资源分配。 For example, in a network environment shown in FIG. 1, RAT # 1 may be set in advance, and RAT # 2 in the presence of a probability distribution spectrum when the spectrum congestion are p1 and p2, this time, The DSAM may be based on the spectrum allocation probabilities spectrum resource allocation. 其中,p1和p2可根据下文描述的准则确定。 Wherein, p1 and p2 may be determined according to the criteria described below.

上述方法2和方法3可以在频谱资源的分配过程中一定程度地实现多个RAT之间频谱分配的公平性,同时基本保证各个RAT的QoS。 2 and 3 above method may be implemented spectrum allocation fairness among the plurality of RAT spectrum resource allocation process to some extent, while substantially guarantee QoS of each RAT.

通过以上描述可以看出,本实施例给出的动态频谱分配方法,可以在多种无线网络共存的情况下实现频谱资源的共享以及动态的频谱资源分配。 Can be seen from the above description, dynamic spectrum allocation method of the present embodiment given, can be shared and dynamic spectrum allocation of spectrum resources in the case where multiple wireless networks coexist.

为了进一步简化本实施例所述的动态频谱分配方法,在本发明另一个优选实施例中,还可以预先为共存的RAT中的AP分配一定的频谱量。 To further simplify the method of dynamic spectrum allocation according to the present embodiment of the embodiment, in another preferred embodiment of the present invention may also be pre-allocated a certain amount of spectrum for the coexisting RAT in the AP. 这样,在步骤D2和D3中新添加所述服务AP和共存AP实际分配的频谱资源n1和n2不为0。 Thus, at step D2 and D3 in adding the new serving AP and the coexisting AP resources actually allocated spectrum n1 and n2 is not 0.

当一个RAT中的AP的频谱需求量小于或者等于预先分配的频谱量时,例如,在r1≤n1或r2≤n2时,RAT AP可以直接为请求频谱资源的MS分配相应的频谱资源,而无需向所述DSAM请求频谱资源;只有当一个RAT中的AP的频谱需求量大于为其预先分配的频谱量时,例如,在r1>n1或r2>n2时,RAT中的AP才需要向DSAM请求相应的频谱资源,请求频谱资源的过程可以参见上述步骤A~E。 When a spectrum demand of an AP of RAT is less than or equal to the amount of spectrum allocated in advance, for example, or in r1≤n1 r2≤n2, RAT AP may be directly allocated to the MS requesting the spectrum resource respective spectral resources without spectrum resource request to the DSAM; only when the spectrum demand of an AP in one RAT is greater than the amount of spectrum for a pre-allocated, for example, in the r1> n1 or r2> when N2, RAT to the DSAM only need to request AP corresponding spectrum resources, spectrum resources requested process may refer to the above-described steps a ~ E. 通过这样优选实施例实现的频谱资源分配过程可以减少频谱分配的信令负荷。 Spectrum allocation process is achieved by a preferred embodiment may reduce the signaling load spectrum allocation.

本实施例还进一步给出了确定预先设定的保留频谱资源和预先设定的共存的RAT在存在频谱拥塞时频谱资源分配概率的准则,下面将以两种RAT共存的网络环境为例详细进行说明。 The present embodiment is further given spectrum allocation determination criterion when the spectrum congestion probabilities set in advance reserved spectrum resources and coexisting RAT preset in the presence of, the following will be two kinds of coexisting RAT in detail an example network environment instructions.

其中,一个RAT中长期的频谱需求量可以度量为离散的概率密度函数p(r),其中,r为一个变量,表示该RAT的频谱需求量。 Wherein the long-term spectrum demand of one RAT may be measured as a discrete probability density function p (r), where, r is a variable representing the spectrum demand of the RAT. 为得到p(r)的值,可以首先收集短时间,例如,每分钟,每小时以及每天内该RAT的业务量负荷变化,然后,在相同时间尺度上推导出相应的频谱资源需求的变化。 To obtain the value of p (r) may first collect a short time, e.g., every minute, every hour and change of the traffic load of the RAT within a day, then derive spectral resource needs corresponding changes over the same time scale. 这样,就可以根据短期的频谱资源需求变化推导出RAT中长期(以月、年为度量单位的大时间尺度)的频谱需求量。 In this way, we can derive the spectral resource needs vary according to the RAT short-term and long-term (in months, in large measure for the time scale units) spectrum demand. 图5显示了一个RAT频谱需求量r随时间的变化情况。 Figure 5 shows a spectrum demand of RAT r changes over time. 图6显示了一个RAT频谱需求量的概率分布。 Figure 6 shows the probability distribution of a RAT spectrum demand. 其中,频谱需求量的离散概率密度函数p(r)可以从收集到的时变的频谱需求量的柱状图获得,所述离散概率密度函数p(r)趋近于连续概率密度函数f(r)。 Wherein the spectrum demand discrete probability density function p (r) spectrum demand histogram may change from time of collection to obtain the discrete probability density function p (r) approaches the continuous probability density function f (r ). 在图6中,用n表示为该RAT实际分配的频谱量。 In FIG. 6, n represents the amount of spectrum for RAT actually allocated.

下面用F(r)表示频谱资源需求变量r的累积分布函数,并进一步定义频谱过载概率(SOP,Spectrum Outage Probability)G(n)为当频谱需求量r超过了实际所分配的频谱量n时的概率,其具体计算公式如下所示:G(n)=Pr(r>n)=∫n∞f(r)dr=1-F(n)]]>在图6中,SOP G(n)显示为在曲线f(r)下面同时又在频谱分配竖线n右侧部分的阴影区域。 When following represents the cumulative distribution function of spectrum demand variable r resources by F (r), and further defined spectral overload probability (SOP, Spectrum Outage Probability) G (n) that when the spectrum demand r exceeds the amount of spectrum actually allocated n the probability that the specific formula is as follows: G (n) = Pr (r> n) = & Integral; n & infin; f (r) dr = 1-F (n)]]> in FIG. 6, SOP G ( n) shown as curve f (r) in the spectrum allocation under the same time the shaded region n vertical right portion. 所定义的SOP可被用来从频谱的角度来度量RAT所能提供的QoS。 SOP may be defined in terms of the spectrum is used to measure the QoS RAT can provide. 所定义的频谱过载概率SOP比传统的服务等级(GOS,Gradeof Service)在多种数据业务存在的情况下提供了更一般的度量方式。 Spectrum defined by SOP overload probability than the traditional level of service (GOS, Gradeof Service) provides a more general metric in the presence of a variety of data services.

用Gi(i=1,2)分别表示两个RAT的SOP值。 With Gi (i = 1,2) represent the values ​​of the two SOP RAT. 对于上述步骤D9所述的方法2,Gi是预先设定的为RAT所保留频谱资源Nrev1、Nrev2的函数。 For the method described in Step D9 2, Gi is a preset for the RAT Nrev1 spectrum resource reservation, Nrev2 function. 对于上述步骤D9所述的方法3,Gi是预先设定的共存的RAT在存在频谱拥塞时频谱资源分配概率p1、p2的函数。 A method for the coexistence of the above step D9 3, Gi is a preset RAT spectrum allocation probabilities p1 spectrum in the presence of congestion, p2 function.

在本实施例中,提出以下4种不同的准则让无线运营商来决定预先设定的为RAT所保留频谱资源Nrev1和Nrev2以及预先设定的共存的RAT在存在频谱拥塞时频谱资源分配概率p1和p2。 In this embodiment, the following four different criteria allow wireless carriers to determine a preset for the RAT and the spectrum resources Nrev1 Nrev2 and preset coexist RAT spectrum in the presence of congested spectrum resource allocation reserved probability p1 and p2.

准则I:maxR。 Guidelines I: maxR.

其中,R表示可以从两个RAT所获得的全部收益。 Wherein, R represents the full benefits can be obtained from the two RAT. 因此,该准则仅仅从无线网络运营商收益的角度进行了考虑。 Therefore, the guidelines only been considered from the wireless network operator revenue perspective. 对于上述步骤D9所述的方法2,R是预先设定的为RAT所保留频谱资源Nrev1和Nrev2的函数。 For the method described in Step D9 2, R is a predetermined function of spectrum resources and Nrev1 Nrev2-RAT reserved. 对于D9所述方法3,R是预先设定的共存的RAT在存在频谱拥塞时频谱资源分配概率p1和p2的函数。 The method for D9 3, R is a predetermined function of coexisting RAT spectrum resources allocation probabilities p1 and p2 of the spectrum in the presence of congestion.

准则II:Gi≤δi,(0<δi≤1)i=1,2。 Guidelines II: Gi≤δi, (0 <δi≤1) i = 1,2.

其中,Gi分别表示为两个RAT的SOP值,δi分别表示为两个RAT设置的SOP门限值,因此,该准则仅从两个RAT所能提供的QoS来进行考虑的。 Wherein, Gi are represented by two SOP RAT values ​​of, respectively, [Delta] SOP threshold set for two RAT, and therefore, only the QoS criterion can provide two RAT be considered.

准则III:同时满足maxR及Gi≤δi,(0<δi≤1)i=1,2。 Guidelines III: maxR and meet Gi≤δi, (0 <δi≤1) i = 1,2.

该准则实质上同时考虑了无线网络运营商的收益以及各RAT所能提供的QoS,在运营收益和提供的QoS取得一定的平衡。 The guidelines essentially taking the QoS wireless network operators as well as the benefits offered by RAT achieved a certain balance in operating income and QoS provided.

准则IV:同时满足Gi≤δi,(0<δi≤1)i=1,2及R≥αRmax(0<α≤1)。 Guidelines IV: meet Gi≤δi, (0 <δi≤1) i = 1,2 and R≥αRmax (0 <α≤1). 其中,Rmax表示在准则I条件下无线网络运营商所得到的最大的收益,α为预先设定的系数。 Wherein, Rmax represents the conditions under criterion I wireless network operator of the obtained maximum benefit, α is a coefficient set in advance. 该准则实质上也同时考虑了无线网络运营商的收益以及各RAT所能提供的QoS,也可以在运营收益和提供的QoS取得一定的平衡。 The guidelines also essentially taking the QoS benefits for wireless network operators as well as the RAT can provide, we can also get some balance in operating income and QoS provided.

根据本发明的另一方面,为了实现上述动态频谱资源分配方法,本发明还提供了一种可以进行动态频谱分配的DSAM,其内部结构如图7所示,主要包括:频谱资源请求处理模块,用于接收来自各个RAT中AP的频谱资源请求消息,并从中提取频谱资源请求的相关参数,例如:频谱需求量、AP ID、cAP ID等等;SAT存储模块,用于存储对应各个RAT中AP的SAT;动态频谱分配模块,连接到所述频谱资源请求处理模块及所述SAT存储模块,用于根据来自频谱资源请求处理模块的频谱资源请求的相关参数,通过查找所述SAT存储模块中存储的SAT,根据一定的动态频谱分配算法进行动态频谱分配;频谱分配结果输出模块,连接到所述动态频谱分配模块,用于将来自所述动态频谱分配模块的动态频谱分配结果输出到发送频谱请求消息的RATAP。 According to another aspect of the present invention, in order to achieve the above-described method of dynamic spectrum allocation, a DSAM the present invention also provides a way for dynamic spectrum allocation, the internal structure shown in Figure 7, including: a spectrum resource request processing module, means for receiving from the AP in the RAT each spectrum resource request message, and extract the relevant parameters of the spectrum resource request, for example: the spectrum demand, AP ID, cAP ID and so on; the SAT storing module, for storing each of the corresponding RAT of AP the SAT; dynamic spectrum allocation module, connected to the spectrum resource request processing module and the SAT storing module, according to the relevant parameters of the spectrum resource requested spectrum resource request from a processing module, by looking up the SAT storing module stores the SAT, the dynamic spectrum allocation in accordance with a certain dynamic spectrum allocation algorithm; dynamic spectrum allocation result of the dynamic spectrum allocation module to the spectrum allocation result output module, connected to the dynamic spectrum allocation module, for outputting to the transmission from the spectrum request RATAP message.

其中,所述动态频谱分配模块可以根据步骤D1~D9所述的频谱分配方法来进行动态频谱分配。 Wherein the dynamic spectrum allocation module may allocate the spectrum dynamically according to the procedure D1 ~ D9 spectrum allocation method.

通过上述结构的DSAM,可以对来自任意RAT中AP的频谱请求消息进行处理,为AP分配所需的频谱资源。 , Can be treated in a request message from an AP of any RAT DSAM the spectrum by the above-described structure, the spectrum resources needed to AP assignment. 并且,利用上述DSAM能够在频谱拥塞的情况下,对频谱资源进行动态分配。 And, using the DSAM the spectrum is possible in the case of congestion, dynamic allocation of spectrum resources.

以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 The preferred embodiment of the above embodiments of the present invention only but are not intended to limit the present invention, any modifications within the spirit and principle of the present invention, the, equivalent replacement, or improvement, it should be included in the present invention. within the scope of protection.

Claims (15)

1.一种在共存的多种无线网络中进行动态频谱分配的方法,其特征在于,包括:A、移动终端MS检测自身的服务接入点AP及该服务AP的共存接入点cAP,获得所述cAP的标识cAP ID,再发送带宽请求消息到所述服务AP,并在该带宽请求消息中携带本次通信的带宽需求量以及所述cAP ID;B、在接收到所述带宽请求消息后,所述服务AP发送频谱请求消息到动态频谱分配模块DSAM,并在所述频谱请求消息中携带自身AP ID,及根据一个或多个MS的所述带宽请求消息得到的该服务AP的频谱需求量和其cAP ID;C、所述DSAM根据所接收的频谱需求量,AP ID及cAP ID,通过一定的动态频谱分配算法进行动态频谱分配,并将频谱分配结果发送到所述服务AP;D、所述服务AP根据来自所述DSAM的频谱分配结果,分配相应的频谱资源给所述MS。 1. A method of dynamic spectrum allocation in multiple coexisting wireless networks, characterized by comprising: A, the mobile terminal MS detects a coexistence cAP own service access point AP and the access point serving AP, to obtain the identification of the cAP cAP ID, and then transmits a bandwidth request message to the serving AP, the bandwidth demand and carry this communication the cAP ID and the bandwidth request message; B, upon receiving the bandwidth request message after the serving AP sending the spectrum request message to the dynamic spectrum allocation module the DSAM, and the spectrum request message carrying its own AP ID, the serving AP message spectrum obtained according to the bandwidth request and one or more of the MS and the demand thereof cAP ID; C, the DSAM the spectrum of the received demand, AP ID and cAP ID, dynamic spectrum allocation by a certain dynamic spectrum allocation algorithm, and the spectrum allocation result to the serving the AP; D, the serving AP according to the spectrum allocation result from the DSAM allocates the spectrum resources to the corresponding MS.
2.根据权利要求1所述的动态频谱分配方法,其特征在于,步骤B所述AP发送频谱请求消息包括:所述AP在接收到一个带宽请求消息后立即发送与所接收带宽请求消息对应的一个频谱请求消息到所述DSAM。 The dynamic spectrum allocation method according to claim 1, wherein said step B, AP sending the spectrum request message comprises: the AP receiving a request message immediately after the transmission bandwidth of the received bandwidth request message corresponding to the a spectrum request message to the DSAM.
3.根据权利要求1所述的动态频谱分配方法,其特征在于,步骤B所述AP发送频谱请求消息包括:所述AP在接收到多个带宽请求消息后,将多个带宽请求合并在一起,发送一个频谱请求到所述DSAM。 The dynamic spectrum allocation method according to claim 1, wherein said step B, AP sending the spectrum request message comprises: receiving the plurality of AP in the bandwidth request message, the plurality of bandwidth requests merged transmitting a spectrum request to the DSAM.
4.根据权利要求3所述的动态频谱分配方法,其特征在于,所述AP根据预先设定的频谱需求量门限或预先设定的频谱请求时间间隔或其组合确定发送频谱请求消息的时机。 4. The method of dynamic spectrum allocation according to claim 3, characterized in that said AP request interval set in advance or a combination of the spectrum of the spectrum demand preset threshold or determining the timing of sending the spectrum request message.
5.根据权利要求1至4任一项所述的动态频谱分配方法,其特征在于,步骤C所述动态频谱分配包括:C1、从所接收的频谱请求消息中提取频谱需求量以及AP ID和cAP ID;C2、根据所述AP ID查找自身存储的与该AP ID对应的频谱分配表SAT,如果存在,则执行步骤C3,否则,建立与该AP ID对应的SAT,并设为所述服务AP实际分配的频谱资源为0,然后执行步骤C3;C3、在所述SAT中查找与cAP ID对应的频谱资源分配记录,如果存在,则执行步骤C4,否则,在所述SAT中添加与所述cAP ID对应的记录,并设为所述cAP实际分配的频谱资源为0,然后执行步骤C4;C4、从所述频谱资源分配记录中获得该MS服务AP实际所分配的频谱资源以及其服务AP的cAP实际所分配的频谱资源,并根据频谱资源请求消息中携带的所述服务AP的频谱需求量及所述cAP的频谱需求量;C5、判断所述服务AP的频谱需求量及 According to a dynamic spectrum allocation method according to any one of claim 4, wherein the step of dynamic spectrum allocation C comprising: extracting message AP ID and the spectrum demand and C1, the spectrum of the received request from cAP ID; C2, to find its own AP ID stored in said ID with the AP corresponding to the spectrum allocation table SAT, if present, step C3, otherwise, establishing with the AP corresponding to the ID of the SAT, and set the service AP spectrum resources actually allocated to 0, then step C3; C3, find the spectrum allocation record corresponding to the cAP ID in the SAT, if present, step C4, or added in the SAT and in the cAP ID corresponding to said record, and set the cAP spectrum resources actually allocated to 0, then the step C4; C4, MS serving AP obtains the spectrum actually allocated resources and their services from the spectrum allocation record cAP spectrum resources actually allocated an AP and the spectrum demand request message carries the serving AP and the spectrum demand of the cAP according to the spectrum resource; C5, determining whether the serving AP and the spectrum demand 述cAP的频谱需求量之和是否大于可全部共享的频谱量,如果是,则进行拥塞情况下的频谱资源动态分配,否则,按照所述服务AP的实际需要为其分配相应的频谱资源;C6、根据频谱分配结果更新所述SAT中对应的频谱资源分配记录。 Said spectrum demand of the cAP is greater than the amount of spectrum, and may all be shared, if it is, the dynamic allocation of spectrum resources congestion situation is, otherwise, according to the actual needs of the serving AP is assigned a respective spectral resource; C6 , updating the spectrum allocation record in the SAT according to the spectrum allocation result corresponding.
6.根据权利要求5所述的动态频谱分配方法,其特征在于,步骤C5所述拥塞情况下的频谱资源动态分配为:基于优先级的频谱资源分配;具体包括:优先满足具有较高的优先级的频谱请求。 6. The method of dynamic spectrum allocation according to claim 5, characterized in that the dynamic allocation of spectrum resources in the C5 congestion steps of: allocating frequency resources based on the priority; specifically includes: priority to meet has a higher priority level spectrum request.
7.根据权利要求5所述的动态频谱分配方法,其特征在于,步骤C5所述拥塞情况下的频谱资源动态分配为:基于保留的频谱资源分配;包括:设置共存的一种无线接入技术RAT中的AP的保留频谱资源Nrev,在动态频谱分配过程中,已设置保留频谱资源的AP实际获得的频谱资源为所述保留频谱资源Nrev和其频谱需求量之间的最小值,其他没有设置保留频谱资源的RAT中的AP可以获得的频谱资源为共享的频谱资源总量与保留频谱资源的AP实际获得的频谱资源之差。 7. The method of dynamic spectrum allocation according to claim 5, characterized in that the dynamic allocation of spectrum resources in the C5 congestion steps of: allocating resources based on the spectrum reserved; comprising: setting a radio access technologies coexist AP-RAT Nrev reserved spectrum resources in, in the process of dynamic spectrum allocation, a spectrum resource reservation set AP spectrum resources to the actually obtained spectrum resource reservation between a minimum value and its spectrum Nrev demand, is not provided to other spectrum resource reservation spectrum resources in the AP of RAT available spectrum resources for the difference of the total spectrum resources shared with the AP reserved spectrum resources actually obtained.
8.根据权利要求7所述的动态频谱分配方法,其特征在于,所述预先为共存的RAT所设定的保留频谱资源是根据频谱过载概率和/或从共存的AP获得的总收益所设计的准则来确定的。 8. The method of dynamic spectrum allocation in accordance with claim 7, wherein the spectrum resources reserved in advance for the coexisting RAT is designed to set the spectrum the overload probability and / or total revenue obtained from the coexisting AP criteria determined.
9.根据权利要求5所述的动态频谱分配方法,其特征在于,步骤D7所述拥塞情况下的频谱资源动态分配为:按照预先设定的各种共存RAT的频谱资源分配概率进行频谱资源动态分配。 9. The method of dynamic spectrum allocation in accordance with claim 5, characterized in that the dynamic allocation of spectrum resources in the congestion D7 steps of: spectrally dynamic resource allocation in accordance with the probability of each spectrum resources coexisting RAT preset distribution.
10.根据权利要求9所述的动态频谱分配方法,其特征在于,所述预先为共存的RAT所设定的频谱资源分配概率是根据频谱过载概率和/或从共存的AP获得的总收益所设计的准则来确定的。 10. The method of dynamic spectrum allocation according to claim 9, wherein said predetermined spectrum allocation probabilities of the coexisting RAT is set in the spectrum the overload probability and / or total revenue obtained from the coexisting AP design criteria determined.
11.根据权利要求5所述的动态频谱分配方法,其特征在于,预先为共存的AP分配一定的频谱资源量;在步骤C5之前进一步包括:如果一个AP的频谱需求量小于或者等于预先分配的频谱量,则该AP直接为请求频谱资源的MS分配相应的频谱资源,然后执行步骤C6,否则,执行步骤C5。 11. The method of dynamic spectrum allocation in accordance with claim 5, wherein the spectrum resources allocated in advance a certain amount of coexisting AP; further comprising prior to the step C5: if the spectrum demand of an AP is less than or equal preassigned amount of spectrum, the AP directly request the corresponding MS spectrum resources allocated spectrum resources, then the step C6, otherwise to step C5.
12.根据权利要求1所述的动态频谱分配方法,其特征在于,当由于MS的移动而导致其cAP改变时,所述方法进一步包括:所述MS进行频谱资源的重新分配。 12. The method of dynamic spectrum allocation in accordance with claim 1, wherein, when the MS is caused due to the movement thereof cAP changes, the method further comprising: the MS spectrum reallocation of resources.
13.根据权利要求12所述的动态频谱分配方法,其特征在于,所述频谱资源的重新分配包括:判断该MS服务AP的频谱需求量及其cAP的频谱需求量之和是否大于可全部共享的频谱量,如果是,则进行拥塞情况下的频谱资源动态分配,否则,按照所述服务AP的实际需要为其分配相应的频谱资源;根据频谱分配结果更新所述SAT中对应的频谱资源分配记录。 13. The method of dynamic spectrum allocation according to claim 12, wherein reallocating the spectrum resources comprises: determining a spectrum demand of the cAP of its spectrum demand of the serving AP and the MS is greater than can all share the amount of spectrum, if so, spectrum resources in the case of dynamic allocation of congestion, or, according to the actual needs of the serving AP assigned respective spectral resource; SAT update the corresponding spectrum allocation according to the spectrum allocation result recording.
14.一种动态频谱分配装置,其特征在于,主要包括:频谱资源请求处理模块,用于接收来自各种无线接入技术中接入点AP的频谱资源请求消息,并从中提取频谱资源请求的相关参数;频谱分配表SAT存储模块,用于存储对应共存的无线接入技术中各个AP的频谱资源分配记录;动态频谱分配模块,连接到所述频谱资源请求处理模块及所述SAT存储模块,用于根据来自频谱资源请求处理模块的频谱资源请求的相关参数,通过查找所述SAT存储模块中存储的SAT记录,根据一定的动态频谱分配算法进行动态频谱分配;频谱分配结果输出模块,连接到所述动态频谱分配模块,用于将来自所述动态频谱分配模块的动态频谱分配结果输出到发送频谱请求消息的AP。 14. An apparatus of dynamic spectrum allocation, which is characterized in that, including: a spectrum request processing module resources, spectrum resources for receiving various radio access technologies in the access point AP request message, and extracts the requested spectrum resource parameters; spectrum allocation table SAT storing module, each AP spectrum allocation record for storing the radio access technology corresponding to coexist; dynamic spectrum allocation module, connected to the spectrum resource request processing module and the SAT storing module, for dynamic spectrum allocation in accordance with the relevant resource parameters of the spectrum resource request from the spectrum request processing module by searching the recording SAT SAT stored in the storage module, according to certain dynamic spectrum allocation algorithm; spectrum allocation result output module, connected to the dynamic spectrum allocation result output dynamic spectrum allocation module, for from the dynamic spectrum allocation module to the AP sending the spectrum request message.
15.根据权利要求14所述的动态频谱分配装置,其特征在于,所述动态频谱分配装置通过有线或者无线的方式与所述服务AP及共存AP通信。 15. The apparatus of dynamic spectrum allocation according to claim 14, wherein the dynamic spectrum allocation apparatus via a wired or wireless manner with the serving AP and a coexisting AP communication.
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